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Finding the Fourth Proportional to 3,999.53, 5,519.31 and 2,207.02

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Solution

The fourth proportional to 3,999.53, 5,519.31 and 2,207.02 is: 3,045.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.53 : 5,519.31 = 2,207.02 : x
  2. Step 2: Convert to fraction form
    3,999.53/5,519.31 = 2,207.02/x
  3. Step 3: Cross multiply
    3,999.53x = 5,519.31 × 2,207.02
  4. Step 4: Simplify right side
    3,999.53x = 12,181,236.01
  5. Step 5: Solve for x
    x = 12,181,236.01/3,999.53
  6. Step 6: Final answer
    x = 3,045.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.